{"product_id":"990-04-70-02-00-bently-nevada-7m-system-vibration-monitor","title":"990-04-70-02-00 Bently Nevada 7m System Vibration Monitor","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 990-04-70-02-00 functions as a self-contained, 2-wire vibration transmitter that bridges the gap between proximity probes and plant control systems. This device converts the complex dynamic signal from a 3300 NSv proximity probe into a standardized 4–20 mA analog output. By providing a signal linearly proportional to peak-to-peak vibration displacement, it enables direct interfacing with PLCs, DCS, or SCADA platforms without the need for a dedicated 3500 rack. This module specifically serves critical rotating machinery where a simplified architecture and a 0–4 mil measurement range are required for API 670 compliant protection.\u003c\/p\u003e\n\u003ch3\u003ePart Number Breakdown\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e990\u003c\/strong\u003e: 990 Series Vibration Transmitter.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e04 (Full-Scale Range)\u003c\/strong\u003e: 0–4 mils pp (0–100 µm pp).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e70 (System Length)\u003c\/strong\u003e: 7.0 Meters (23.0 Feet).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e02 (Mounting Option)\u003c\/strong\u003e: Panel Mount (Standard screws).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e00 (Agency Approval)\u003c\/strong\u003e: No specific hazardous area approvals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eProfessional Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4–20 mA DC (Loop-powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull-Scale Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–4 mils pp (0–100 µm pp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3300 NSv Proximity Probe + Extension Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Calibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.0 Meters (Total Electrical Length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Hz to 1,000 Hz (600 to 60,000 cpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+18 to +30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP66 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e–35 °C to +85 °C (–31 °F to +185 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePanel Mount (4-bolt pattern)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan class=\"mat-mdc-button-persistent-ripple mdc-button__ripple\"\u003e\u003c\/span\u003e\u003cspan class=\"mdc-button__label\"\u003e\u003cspan class=\"export-sheets-button\"\u003e\u003cspan class=\"export-sheets-icon\"\u003e\u003c\/span\u003e导出到 Google 表格\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"mat-focus-indicator\"\u003e\u003c\/span\u003e\u003cspan class=\"mat-mdc-button-touch-target\"\u003e\u003c\/span\u003e\u003cspan class=\"mat-mdc-button-persistent-ripple mdc-icon-button__ripple\"\u003e\u003c\/span\u003e\u003cspan class=\"mat-focus-indicator\"\u003e\u003c\/span\u003e\u003cspan class=\"mat-mdc-button-touch-target\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe 990-04-70-02-00 solves integration challenges in modern industrial automation:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect PLC\/DCS Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis transmitter eliminates the cost and space requirements of a centralized monitoring rack. It outputs a standard 4-20mA loop signal, allowing existing control system I\/O cards to handle vibration data as a standard process variable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized for 3300 NSv Systems:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 990 series specifically supports the 3300 NSv probe line, which features a smaller tip diameter and tighter side-clearance requirements. This makes the 990-04-70-02-00 ideal for small-bore piping, fluid-film bearing motors, and centrifugal compressors with limited probe mounting space.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRuggedized NEMA 4X Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe IP66-rated enclosure allows for mounting directly at the machine base or in local junction boxes. The circuit design withstands extreme temperature fluctuations and high-moisture environments typical of power generation and petrochemical facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Loop Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe transmitter maintains a specific \"Not OK\" current level (typically \u0026lt;3.6 mA) if it detects a transducer failure or cable disconnect. This hardware-level diagnostic ensures that the control system can distinguish between zero vibration and a sensor fault, preventing \"blind\" operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Bently Nevada 990-04-70-02-00 unit brand new?\u003c\/strong\u003eYes. We supply the 990-04-70-02-00 in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition. Each unit arrives in its original factory packaging, ensuring the internal calibration and loop-power circuitry meet all OEM performance benchmarks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat probe and cable length must I use with this transmitter?\u003c\/strong\u003eThis specific unit (70 option) requires a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e7.0-meter total system length\u003c\/strong\u003e. You must use a 3300 NSv probe and extension cable that combined equal exactly 7.0 meters. Using a 5.0m or 9.0m system will result in significant calibration errors and inaccurate 4-20mA readings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mount this transmitter on a DIN rail?\u003c\/strong\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emounting option designates a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePanel Mount\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econfiguration. While it lacks the pre-installed DIN rail clips found on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e01\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evariant, you can mount it directly to a backplate using the provided bolt holes. If your cabinet requires DIN mounting, ensure you have the appropriate adapter or specify the 01 model.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this transmitter require an external power supply?\u003c\/strong\u003eThe 990-04-70-02-00 is a loop-powered device. It requires an external\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+18 to +30 VDC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epower source, typically provided by the analog input card of your PLC or DCS. It regulates the current on the loop to represent the measured vibration level.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":42870827679834,"sku":"990-04-70-02-00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/233_c30a7efd-4e88-4f0a-90fa-2a34f2bc95ce.jpg?v=1776761217","url":"https:\/\/www.spareoil.com\/products\/990-04-70-02-00-bently-nevada-7m-system-vibration-monitor","provider":"SpareOil Automation","version":"1.0","type":"link"}